Maybe you're a totally rational human being who also happens to believe in alien abductions, ghost kidnappings or yeti carjackings. That's OK. You're not alone. Why, sometimes even courts and governments blur the line between reality and bullshit.

The truth is that most of us aren't exactly doctors when it comes to our knowledge of modern illness. A lot of what we know and believe about how to avoid being sick is based on old wives' tales and approximately as medically advanced as the idea that masturbation causes blindness.

Genetic engineering scares a lot of people, partly because we love making sci-fi movies and video games starring walking humanoid horrors that resulted from experiments gone wrong. And, while the idea of something like growing a human heart in a sheep's body just seems wrong somehow, it probably seems less wrong to the person who actually needs a h